Ube Roll

Ingredients

• 1 cup cake flour
• 1/2 cup sugar
• 1 1/2 tsp baking powder
• 1/2 tsp salt
• 4 egg yolks, room temperature
• 1/4 cup vegetable oil
• 1/4 cup whole milk
• 1 - 1 1/2 tbsp ube extract
• 1/4 cup ube jam
• 4 egg whites, room temperature
• 1/4 tsp cream of tartar
• 1/4 cup sugar
• 2 egg whites, room temperature
• 1/8 tsp salt
• 1 tbsp sugar
• 1/2 cup water
• 3/4 cup sugar
• 12 tbsp softened butter
• Powdered sugar for dusting